space velocity


: the velocity of a star's motion relative to the sun as determined from its proper motion, distance, and radial velocity

called also space motion

: the number of volumes of gas or liquid usually calculated to standard conditions that pass over or through one unit volume (as of a catalyst in a reaction tube) in unit time

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Dictionary Entries Near space velocity

Cite this Entry

“Space velocity.” Dictionary, Merriam-Webster, Accessed 12 Apr. 2024.

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